6d+21=39

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Solution for 6d+21=39 equation:


6d+21=39

We simplify the equation to the form, which is simple to understand 
6d+21=39

We move all terms containing d to the left and all other terms to the right. 
+6d=+39-21

We simplify left and right side of the equation. 
+6d=+18

We divide both sides of the equation by 6 to get d. 
d=3

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